Improvement in invalid-chairs



, H. F. SIEBOLD.

Improvement in Invalid-Chairs.

' Patented Sep.10, I872.

wimwmz UNITED 'rA'rns HENRY F. SIEBOLD, OF NEW YORK, N. Y.

PATENT QFFICE.

IMPROVEMENT IN INVALID-CHAIRS.

Specification forming part of Letters Patent No. 131,230, dated September 10, 1872.

Specification describing a new and useful Improvement in Invalids Chairs, invented by HENRY F. SIEnoLn, of the city, county, and State of New York.

The object ofthis invention is to furnish a chair which may, at pleasure, be converted into a lounge or a bed, and be adjusted so that a person may recline in any desired position.

. This chair is adapted for the use of patients in sponding parts.

A represents the two back or rear legs, and B the two front legs of the chair. (3 represents the back, which is hinged to the top rails of the seat D, as seen at E E. F is a semi-circular ratchet-bar attached to the top rail of the seat on each side of the chair. G are the arms of the chair, which are composed each of two parts hinged together at H. H istheupper part, which is pivoted to the chair-back. I is the lower part of the arm, which is pivoted to the side rails, the pivots being the centers of the semicircles F. On the lower ends of this part I is a flexible ratchet-pawl, J. K is a rod which passes through the chair, upon the ends of which the ratchet-pawls turn and engage with the teeth of the ratchet-bars when the arms are moved in adjusting the back of the chairs. L is a handle on each side, by means of which a person occupying the chair may detach the pawls from the ratchets and adjust the back to any desired position. These handles are fast on the studs m, which studs are attached to the arm pieces I. N N are arms on the studs, which are connected with the ratchet-pawls by the plates 0 I. The plates P are loose on the ends of the transverse rod K. The pawl is in the form of a bell-crank, the upper limb of which is turned at a right angle and passes through the plate P. The back -motion of the pawl is produced by a spiral spring, R, which is arranged so as to react against the pawl and force it to engage with the teeth of the ratchet at all times, except when the handles are turned and pawls disengaged by the occupant of the chair or other person. By means of the ratchet-bar and'pawl the back of the chair may be varied from a vertical to a horizontal position, as may be desired. S is the leg support, which consists of a frame the side pieces of which are hinged to the ends of the top rails of the seat, as seen at T. This frame is supported parallel with the seat or in an inclined position by the two curved ratchet-bars U, which pass through themortise cleatpiecesVonthe sides of thefront legs. The ratchet-teeth engage with the lower ends of the mortise by their own gravity, and are disengaged by means of the rod W, which has a handle, X, upon each end. Y is a footrest which is hinged to the leg-support S, which may be adjusted and supported in any position by. means of rods, or in any of the wellknown ways. The cross-pieces of the seat, back, and front, may be of angle-iron, as seen in the drawing, or they may be round rods, for

the support of the mattress.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination, in a single chair, of legs A B having support S, with ratchet bars a a thereon, hinged back 0, seat D having ratchet F, arms G H I N having pawl J, the rod K having handle L, plates 0 P, spring R, rodW having handleX, and foot-rest Y, all construct ed and arranged substantially as and for the purpose described.

Witnesses: HENRY F. SIEBOLD.

O. SEDGWIGK, T. B. Mosnnn. 

